Suhairi, Putri Apriani Batubara, Febrianty Try Andini, and M. Alfito Dinova. “Correspondence And Business Presentations And Handling Of Customer Complaints”. International Journal of Economic Research and Financial Accounting 1, no. 4 (July 31, 2023). Accessed October 6, 2024. https://ijerfa.afdifaljournal.com/index.php/ijerfa/article/view/46.